Technology | Scientific Breakthrough No More Pregnancy
192Technology | Scientific Breakthrough Goodbye Pregnancy
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The landmark experiment by the University of Bath rewrites 200 years of biology teaching and could pave the way for a baby to be born from the DNA of a man.
It was always thought that only a female egg could spark the changes in a sperm required to make a baby, because an egg forms from a special kind of cell division in which just half the number of chromosomes are carried over.
Sperm cells form in the same way, so that when a sperm and egg meet they form a full genetic quota, with half our DNA coming from our mother and half from our father.
But now scientists have shown embryos could be created from cells which carry all their chromosomes which means that, in theory, any cell in the human body could be fertilized by a sperm.
Three generations of mice have already been created using the technique and are fit and healthy and now researchers are planning to test out the theory using skin cells.
Dr Tony Perry, a molecular embryologist and senior author of the study, said: “Some people say start the day with an egg, but what this paper says is that you don’t necessarily have to start development with one.
“It has been thought that only an egg cell was capable of reprogramming sperm to allow embryonic development to take place.
“Our work challenges that dogma, held since early embryologists first observed mammalian eggs in around 1827 and observed fertilization 50 years later, that only an egg cell fertilized with a sperm cell can result in a live mammalian birth.
“We’re talking about different ways of making embryos. Imagine that you could take skin cells and make embryos from them. This would have all kinds of utility.”
#technology #tech #scientificbreakthrough